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| Mirrors > Home > MPE Home > Th. List > mapssfset | Structured version Visualization version GIF version | ||
| Description: The value of the set exponentiation (𝐵 ↑m 𝐴) is a subset of the class of functions from 𝐴 to 𝐵. (Contributed by AV, 10-Aug-2024.) |
| Ref | Expression |
|---|---|
| mapssfset | ⊢ (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵} |
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | mapfset 8855 | . . 3 ⊢ (𝐵 ∈ V → {𝑓 ∣ 𝑓:𝐴⟶𝐵} = (𝐵 ↑m 𝐴)) | |
| 2 | eqimss2 3993 | . . 3 ⊢ ({𝑓 ∣ 𝑓:𝐴⟶𝐵} = (𝐵 ↑m 𝐴) → (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵}) | |
| 3 | 1, 2 | syl 18 | . 2 ⊢ (𝐵 ∈ V → (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵}) |
| 4 | reldmmap 8838 | . . . 4 ⊢ Rel dom ↑m | |
| 5 | 4 | ovprc1 7456 | . . 3 ⊢ (¬ 𝐵 ∈ V → (𝐵 ↑m 𝐴) = ∅) |
| 6 | 0ss 4353 | . . 3 ⊢ ∅ ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵} | |
| 7 | 5, 6 | eqsstrdi 3978 | . 2 ⊢ (¬ 𝐵 ∈ V → (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵}) |
| 8 | 3, 7 | pm2.61i 184 | 1 ⊢ (𝐵 ↑m 𝐴) ⊆ {𝑓 ∣ 𝑓:𝐴⟶𝐵} |
| Colors of variables: wff setvar class |
| This proof depends on syntax axioms: ¬ wn 3 = wceq 1570 ∈ wcel 2145 {cab 2740 Vcvv 3453 ⊆ wss 3902 ∅c0 4282 ⟶wf 6533 (class class class)co 7417 ↑m cmap 8830 |
| This proof depends on axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8 ax-gen 1828 ax-4 1842 ax-5 1943 ax-6 2000 ax-7 2041 ax-8 2147 ax-9 2155 ax-10 2178 ax-11 2194 ax-12 2215 ax-ext 2734 ax-sep 5255 ax-nul 5267 ax-pow 5334 ax-pr 5402 ax-un 7740 |
| This proof depends on definitions: df-bi 210 df-an 402 df-or 862 df-3an 1105 df-tru 1573 df-fal 1583 df-ex 1813 df-nf 1817 df-sb 2100 df-mo 2566 df-eu 2596 df-clab 2741 df-cleq 2754 df-clel 2837 df-nfc 2911 df-ne 2958 df-ral 3079 df-rex 3089 df-rab 3415 df-v 3455 df-sbc 3743 df-csb 3851 df-dif 3905 df-un 3907 df-in 3909 df-ss 3919 df-nul 4283 df-if 4486 df-pw 4562 df-sn 4588 df-pr 4590 df-op 4594 df-uni 4871 df-iun 4956 df-br 5108 df-opab 5172 df-mpt 5191 df-id 5554 df-xp 5665 df-rel 5666 df-cnv 5667 df-co 5668 df-dm 5669 df-rn 5670 df-res 5671 df-ima 5672 df-iota 6493 df-fun 6539 df-fn 6540 df-f 6541 df-fv 6545 df-ov 7420 df-oprab 7421 df-mpo 7422 df-1st 7990 df-2nd 7991 df-map 8832 |
| This theorem is used by: (None) |
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